TLDR: automatically translating pages that aren’t in a language you read is not automatic
The google chrome translate-this-page built-in extension (which uses google translate) works just fine.
In Brave, when you activate the “Offer to translate pages that aren’t in a language you read”, and then install the required google translate extension, it will not automatically translate the pages. You have to manually click the extension icon, and click “translate this page”. And whenever you navigate to a new sub-page within the same website, you have to repeat the clicks.